<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>参数列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-alert :closable="false" title="注意：只允许为第三级分类设置相关参数！" type="warning" show-icon>
            </el-alert>
            <el-row style="margin: 20px 0;">
                <el-col>
                    <span>选择商品分类：</span>
                    <el-cascader class="cascader" v-model="cateKeys" :options="cateList" :props="cateProps"
                        @change="handleChange"></el-cascader>
                </el-col>
            </el-row>
            <el-tabs v-model="activeName" @tab-click="handleTabClick">
                <el-tab-pane label="动态参数" name="many">
                     <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
                     <!-- 动态参数表格 -->
                     <el-table :data="manyTableData" border stripe>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable v-show="item" @close="handleClose(i,scope.row)">{{ item }}</el-tag>
                                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small"
                                    @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>

                            </template>
                        </el-table-column>
                        <el-table-column type="index"></el-table-column>
                        <el-table-column label="参数名称" prop="attr_name"></el-table-column>
                        <el-table-column label="操作">
                            <template slot-scope="scope">
                                <el-button type="primary" icon="el-icon-edit" size="mini"  @click="showEditCard(scope.row.attr_id)">编辑</el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
                <el-tab-pane label="静态管理" name="only">
                    <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加属性</el-button>
                    <el-table :data="onlyTableData" border stripe>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable v-show="item" @close="handleClose(i,scope.row)">{{ item }}</el-tag>
                                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small"
                                    @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                            </template>
                        </el-table-column>
                        <el-table-column type="index"></el-table-column>
                        <el-table-column label="属性名称" prop="attr_name"></el-table-column>
                        <el-table-column label="操作">
                            <template slot-scope="scope">
                                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditCard(scope.row.attr_id)">修改</el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
            </el-tabs>
        </el-card>
        <!-- 添加参数的对话框 -->
        <el-dialog :title="'添加'+titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addParams">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改参数对话框 -->
        <el-dialog :title="'修改'+titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="editForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editParams">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        return {
            cateList:[],
            cateProps:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            cateKeys:[ ],
            activeName:'many',
            manyTableData:[],
            //静态
            onlyTableData:[],
            addDialogVisible:false,
            // 对话框数据添加
            addForm:{
                attr_name:''
            },
            // 添加表单的验证规则
            addFormRules:{
                attr_name:[
                {required:true,message:'请输入参数',trigger:'blur'}
                ]
            },
            // 修改对话框
            editDialogVisible:false,
            editForm:{},
            editFormRules:{
                attr_name:[
                {required:true,message:'请输入参数',trigger:'blur'}
                ]
            },
            inputVisible:false,
            inputValue:''
        };
    },
    created(){
        this.getCateList()
    },
    mounted() {
        
    },

    methods: {
        async getCateList(){
           const {data:res} = await this.$http.get('categories')
           if (res.meta.status!==200) {
            return this.$message.error('列表获取失败')
           }
           this.cateList = res.data
        },
        // 级联选择框选择发生的事情
        
        handleChange(){
            this.getParamsData()
        },
        async getParamsData() {
            if (this.cateKeys.length !== 3) {
                this.cateKeys = []
                this.onlyTableData=[]
                this.manyTableData=[]
                return
            }
            //    根据所选的id和面板activeName 获取参数
            const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: this.activeName } })
            res.data.forEach(item => {
                item.attr_vals = item.attr_vals.split(',')
                item.inputVisible = false
            });
            console.log(res.data);
            if (res.meta.status != 200) {
                return this.$message.error(res.meta.msg)
            }
            if (this.activeName ==='many') {
                this.manyTableData = res.data
            }else{
                this.onlyTableData = res.data
            }
        },
        //获取列表操作
        handleTabClick(){
            this.getParamsData()
        },
        addDialogClose(){
            this.$refs.addFormRef.resetFields()
        },
        async addParams(){
            this.$refs.addFormRef.validate(async valid=>{
                if (!valid) return
                const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{
                    attr_name:this.addForm.attr_name,
                    attr_sel:this.activeName,

                })
                if (res.meta.status != 201) {
                    return this.$message.error(res.meta.msg)
                }
                this.$message.success(res.meta.msg)
                this.addDialogVisible = false
                this.getParamsData()
            })
        },
        // 点击弹出修改对话框
        async showEditCard(attr_id){
            const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{params:{attr_sel:this.activeName}})
            if (res.meta.status!==200) {
            return this.$message.error('获取失败')
           }
           this.editForm = res.data
            this.editDialogVisible = true
        },
        editDialogClose(){
            this.$refs.editFormRef.resetFields()
        },
        editParams(){
            this.$refs.editFormRef.validate(async valid=>{
                if (!valid) return
                const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{attr_name:this.editForm.attr_name,attr_sel:this.activeName})
                if (res.meta.status !== 200) {
                    return this.$message.error('修改失败')
                }
                this.$message.success('修改成功')
                this.getParamsData()
                this.editDialogVisible = false
            })
        },
        async removeParams(attr_id){
           const configText = await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            if (configText !== 'confirm') {
                return this.$message.info('取消删除！')
            }
            // 执行删除
            const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
            if (res.meta.status!==200) {
            return this.$message.error(res.meta.msg)
           }
           this.$message.success('删除成功')
           this.getParamsData()
        },
        async handleInputConfirm(row){
            if (row.inputValue.trim().length === 0) {
                row.inputValue = ''
                row.inputVisible = false
                return
            }
            // 合法合规的内容进行后续处理
            row.attr_vals.push(row.inputValue.trim())
            row.inputValue = ''
            row.inputVisible = false
            this.saveAttrValues(row)
        },
        showInput(row){
            row.inputVisible = true
            this.$nextTick(_ => {
                this.$refs.saveTagInput.$refs.input.focus();
            });
        },
        async saveAttrValues(row){
            const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{attr_name:row.attr_name,attr_sel:row.attr_sel,attr_vals:row.attr_vals.join(',')})
            if (res.meta.status !== 200) {
                    return this.$message.error('修改失败')
                }
                this.$message.success('修改成功')
        },
        handleClose(i,row){
            row.attr_vals.splice(i,1)
            this.saveAttrValues(row)
        }
    },
    computed:{
        isBtnDisabled(){
            if (this.cateKeys.length!==3) {
                return true
            }
            return false
        },
        // 分类Id
        cateId(){
            if (this.cateKeys.length === 3) {
                return this.cateKeys[2]
            }
            return null
        },
        //动态计算标题的文本
        titleText(){
            if (this.activeName==='many') {
                return '动态参数'
            }
            return '静态属性'
        }
    },
    
};
</script>

<style lang="less" scoped>
.input-new-tag{
    width: 120px;
}
</style>